/*
 * WPA Supplicant - driver interaction with generic Linux Wireless Extensions
 * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 *
 * This file implements a driver interface for the Linux Wireless Extensions.
 * When used with WE-18 or newer, this interface can be used as-is with number
 * of drivers. In addition to this, some of the common functions in this file
 * can be used by other driver interface implementations that use generic WE
 * ioctls, but require private ioctls for some of the functionality.
 */

#include "includes.h"
#include <sys/ioctl.h>
#include <net/if_arp.h>
#include <net/if.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <cutils/properties.h>

#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>

#include "nl80211.h"

#include "wireless_copy.h"
#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "driver_wext.h"
#include "ieee802_11_defs.h"
#include "wpa_common.h"
#include "wpa_ctrl.h"
#include "wpa_supplicant_i.h"
#include "config_ssid.h"
#include "wpa_debug.h"


static int wpa_driver_wext_flush_pmkid(void *priv);
static int wpa_driver_wext_get_range(void *priv);
static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv);


static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
                      int linkmode, int operstate)
{
    struct {
        struct nlmsghdr hdr;
        struct ifinfomsg ifinfo;
        char opts[16];
    } req;
    struct rtattr *rta;
    static int nl_seq;
    ssize_t ret;

    os_memset(&req, 0, sizeof(req));

    req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
    req.hdr.nlmsg_type = RTM_SETLINK;
    req.hdr.nlmsg_flags = NLM_F_REQUEST;
    req.hdr.nlmsg_seq = ++nl_seq;
    req.hdr.nlmsg_pid = 0;

    req.ifinfo.ifi_family = AF_UNSPEC;
    req.ifinfo.ifi_type = 0;
    req.ifinfo.ifi_index = drv->ifindex;
    req.ifinfo.ifi_flags = 0;
    req.ifinfo.ifi_change = 0;

    if (linkmode != -1) {
        rta = aliasing_hide_typecast(
            ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
            struct rtattr);
        rta->rta_type = IFLA_LINKMODE;
        rta->rta_len = RTA_LENGTH(sizeof(char));
        *((char *) RTA_DATA(rta)) = linkmode;
        req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
            RTA_LENGTH(sizeof(char));
    }
    if (operstate != -1) {
        rta = (struct rtattr *)
            ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
        rta->rta_type = IFLA_OPERSTATE;
        rta->rta_len = RTA_LENGTH(sizeof(char));
        *((char *) RTA_DATA(rta)) = operstate;
        req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
            RTA_LENGTH(sizeof(char));
    }

    wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
           linkmode, operstate);

    ret = send(drv->ioctl_sock, &req, req.hdr.nlmsg_len, 0);
    if (ret < 0) {
        wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
               "%s (assume operstate is not supported)",
               strerror(errno));
    }

    return ret < 0 ? -1 : 0;
}


static void
wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
{
    union wpa_event_data data;

    wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
           custom);

    os_memset(&data, 0, sizeof(data));
    /* Host AP driver */
    if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
        data.michael_mic_failure.unicast =
            os_strstr(custom, " unicast ") != NULL;
        /* TODO: parse parameters(?) */
        wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
    } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
        char *spos;
        int bytes;

        spos = custom + 17;

        bytes = strspn(spos, "0123456789abcdefABCDEF");
        if (!bytes || (bytes & 1)) {
            return;
        }
        bytes /= 2;

        data.assoc_info.req_ies = os_malloc(bytes);
        if (data.assoc_info.req_ies == NULL) {
            return;
        }
        data.assoc_info.req_ies_len = bytes;
        hexstr2bin(spos, data.assoc_info.req_ies, bytes);

        spos += bytes * 2;

        data.assoc_info.resp_ies = NULL;
        data.assoc_info.resp_ies_len = 0;

        if (os_strncmp(spos, " RespIEs=", 9) == 0) {
            spos += 9;

            bytes = strspn(spos, "0123456789abcdefABCDEF");
            if (!bytes || (bytes & 1)) {
                goto done;
            }
            bytes /= 2;

            data.assoc_info.resp_ies = os_malloc(bytes);
            if (data.assoc_info.resp_ies == NULL) {
                goto done;
            }

            data.assoc_info.resp_ies_len = bytes;
            hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
        }

        wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);

    done:
        os_free(data.assoc_info.resp_ies);
        os_free(data.assoc_info.req_ies);
#ifdef CONFIG_PEERKEY
    } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
        if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
            wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
                   "STKSTART.request '%s'", custom + 17);
            return;
        }
        wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
#endif /* CONFIG_PEERKEY */
#ifdef ANDROID
    } else if (os_strncmp(custom, "STOP", 4) == 0) {
        wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
    } else if (os_strncmp(custom, "START", 5) == 0) {
        wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
    } else if (os_strncmp(custom, "HANG", 4) == 0) {
        wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
#endif /* ANDROID */
    }
}


static int wpa_driver_wext_event_wireless_michaelmicfailure(
    void *ctx, const char *ev, size_t len)
{
    const struct iw_michaelmicfailure *mic;
    union wpa_event_data data;

    if (len < sizeof(*mic)) {
        return -1;
    }

    mic = (const struct iw_michaelmicfailure *) ev;

    wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
           "flags=0x%x src_addr=" MACSTR, mic->flags,
           MAC2STR(mic->src_addr.sa_data));

    os_memset(&data, 0, sizeof(data));
    data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
    wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);

    return 0;
}


static int wpa_driver_wext_event_wireless_pmkidcand(
    struct wpa_driver_wext_data *drv, const char *ev, size_t len)
{
    const struct iw_pmkid_cand *cand;
    union wpa_event_data data;
    const u8 *addr;

    if (len < sizeof(*cand)) {
        return -1;
    }

    cand = (const struct iw_pmkid_cand *) ev;
    addr = (const u8 *) cand->bssid.sa_data;

    wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
           "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
           cand->index, MAC2STR(addr));

    os_memset(&data, 0, sizeof(data));
    os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
    data.pmkid_candidate.index = cand->index;
    data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
    wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);

    return 0;
}


static int wpa_driver_wext_event_wireless_assocreqie(
    struct wpa_driver_wext_data *drv, const char *ev, int len)
{
    if (len < 0) {
        return -1;
    }

    wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
            len);
    os_free(drv->assoc_req_ies);
    drv->assoc_req_ies = os_malloc(len);
    if (drv->assoc_req_ies == NULL) {
        drv->assoc_req_ies_len = 0;
        return -1;
    }
    os_memcpy(drv->assoc_req_ies, ev, len);
    drv->assoc_req_ies_len = len;

    return 0;
}


static int wpa_driver_wext_event_wireless_assocrespie(
    struct wpa_driver_wext_data *drv, const char *ev, int len)
{
    if (len < 0) {
        return -1;
    }

    wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
            len);
    os_free(drv->assoc_resp_ies);
    drv->assoc_resp_ies = os_malloc(len);
    if (drv->assoc_resp_ies == NULL) {
        drv->assoc_resp_ies_len = 0;
        return -1;
    }
    os_memcpy(drv->assoc_resp_ies, ev, len);
    drv->assoc_resp_ies_len = len;

    return 0;
}


static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
{
    union wpa_event_data data;

    if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL) {
        return;
    }

    os_memset(&data, 0, sizeof(data));
    if (drv->assoc_req_ies) {
        data.assoc_info.req_ies = drv->assoc_req_ies;
        drv->assoc_req_ies = NULL;
        data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
    }
    if (drv->assoc_resp_ies) {
        data.assoc_info.resp_ies = drv->assoc_resp_ies;
        drv->assoc_resp_ies = NULL;
        data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
    }

    wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);

    os_free(data.assoc_info.req_ies);
    os_free(data.assoc_info.resp_ies);
}


static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
                       void *ctx, char *data, int len)
{
    struct iw_event iwe_buf, *iwe = &iwe_buf;
    char *pos, *end, *custom, *buf;

    pos = data;
    end = data + len;

    while (pos + IW_EV_LCP_LEN <= end) {
        /* Event data may be unaligned, so make a local, aligned copy
         * before processing. */
        os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
        wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
               iwe->cmd, iwe->len);
        if (iwe->len <= IW_EV_LCP_LEN) {
            return;
        }

        custom = pos + IW_EV_POINT_LEN;
        if (drv->we_version_compiled > 18 &&
            (iwe->cmd == IWEVMICHAELMICFAILURE ||
             iwe->cmd == IWEVCUSTOM ||
             iwe->cmd == IWEVASSOCREQIE ||
             iwe->cmd == IWEVASSOCRESPIE ||
             iwe->cmd == IWEVPMKIDCAND)) {
            /* WE-19 removed the pointer from struct iw_point */
            char *dpos = (char *) &iwe_buf.u.data.length;
            int dlen = dpos - (char *) &iwe_buf;
            os_memcpy(dpos, pos + IW_EV_LCP_LEN,
                  sizeof(struct iw_event) - dlen);
        } else {
            os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
            custom += IW_EV_POINT_OFF;
        }

        switch (iwe->cmd) {
        case SIOCGIWAP:
            wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
                   MACSTR,
                   MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
            if (is_zero_ether_addr(
                    (const u8 *) iwe->u.ap_addr.sa_data) ||
                os_memcmp(iwe->u.ap_addr.sa_data,
                      "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
                0) {
                os_free(drv->assoc_req_ies);
                drv->assoc_req_ies = NULL;
                os_free(drv->assoc_resp_ies);
                drv->assoc_resp_ies = NULL;
#ifdef ANDROID
                if (!drv->skip_disconnect) {
                    drv->skip_disconnect = 1;
#endif
                    wpa_supplicant_event(ctx, EVENT_DISASSOC,
                             NULL);
#ifdef ANDROID
                    wpa_driver_wext_disconnect(drv);
                }
#endif

            } else {
#ifdef ANDROID
                drv->skip_disconnect = 0;
#endif
                wpa_driver_wext_event_assoc_ies(drv);
                wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
            }
            break;
        case IWEVMICHAELMICFAILURE:
            if (custom + iwe->u.data.length > end) {
                wpa_printf(MSG_DEBUG, "WEXT: Invalid "
                       "IWEVMICHAELMICFAILURE length");
                return;
            }
            wpa_driver_wext_event_wireless_michaelmicfailure(
                ctx, custom, iwe->u.data.length);
            break;
        case IWEVCUSTOM:
            if (custom + iwe->u.data.length > end) {
                wpa_printf(MSG_DEBUG, "WEXT: Invalid "
                       "IWEVCUSTOM length");
                return;
            }
            buf = os_malloc(iwe->u.data.length + 1);
            if (buf == NULL) {
                return;
            }
            os_memcpy(buf, custom, iwe->u.data.length);
            buf[iwe->u.data.length] = '\0';
            wpa_driver_wext_event_wireless_custom(ctx, buf);
            os_free(buf);
            break;
        case SIOCGIWSCAN:
            drv->scan_complete_events = 1;
            eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
                         drv, ctx);
            wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
            break;
        case IWEVASSOCREQIE:
            if (custom + iwe->u.data.length > end) {
                wpa_printf(MSG_DEBUG, "WEXT: Invalid "
                       "IWEVASSOCREQIE length");
                return;
            }
            wpa_driver_wext_event_wireless_assocreqie(
                drv, custom, iwe->u.data.length);
            break;
        case IWEVASSOCRESPIE:
            if (custom + iwe->u.data.length > end) {
                wpa_printf(MSG_DEBUG, "WEXT: Invalid "
                       "IWEVASSOCRESPIE length");
                return;
            }
            wpa_driver_wext_event_wireless_assocrespie(
                drv, custom, iwe->u.data.length);
            break;
        case IWEVPMKIDCAND:
            if (custom + iwe->u.data.length > end) {
                wpa_printf(MSG_DEBUG, "WEXT: Invalid "
                       "IWEVPMKIDCAND length");
                return;
            }
            wpa_driver_wext_event_wireless_pmkidcand(
                drv, custom, iwe->u.data.length);
            break;
        }

        pos += iwe->len;
    }
}


static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
                       void *ctx, char *buf, size_t len,
                       int del)
{
    union wpa_event_data event;

    os_memset(&event, 0, sizeof(event));
    if (len > sizeof(event.interface_status.ifname)) {
        len = sizeof(event.interface_status.ifname) - 1;
    }
    os_memcpy(event.interface_status.ifname, buf, len);
    event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
        EVENT_INTERFACE_ADDED;

    wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
           del ? "DEL" : "NEW",
           event.interface_status.ifname,
           del ? "removed" : "added");

    if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
        if (del) {
            drv->if_removed = 1;
        } else {
            drv->if_removed = 0;
        }
    }

    wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
}


static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
                      struct nlmsghdr *h)
{
    struct ifinfomsg *ifi;
    int attrlen, nlmsg_len, rta_len;
    struct rtattr *attr;

    ifi = NLMSG_DATA(h);

    nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));

    attrlen = h->nlmsg_len - nlmsg_len;
    if (attrlen < 0) {
        return 0;
    }

    attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);

    rta_len = RTA_ALIGN(sizeof(struct rtattr));
    while (RTA_OK(attr, attrlen)) {
        if (attr->rta_type == IFLA_IFNAME) {
            if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
                == 0) {
                return 1;
            } else {
                break;
            }
        }
        attr = RTA_NEXT(attr, attrlen);
    }

    return 0;
}


static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
                       int ifindex, struct nlmsghdr *h)
{
    if (drv->ifindex == ifindex || drv->ifindex2 == ifindex) {
        return 1;
    }

    if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
        drv->ifindex = if_nametoindex(drv->ifname);
        wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
               "interface");
        wpa_driver_wext_finish_drv_init(drv);
        return 1;
    }

    return 0;
}


static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
                          void *ctx, struct nlmsghdr *h,
                          size_t len)
{
    struct ifinfomsg *ifi;
    int attrlen, nlmsg_len, rta_len;
    struct rtattr * attr;

    if (len < sizeof(*ifi)) {
        return;
    }

    ifi = NLMSG_DATA(h);

    if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
        wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
               ifi->ifi_index);
        return;
    }

    wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
           "(%s%s%s%s)",
           drv->operstate, ifi->ifi_flags,
           (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
           (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
           (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
           (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
    /*
     * Some drivers send the association event before the operup event--in
     * this case, lifting operstate in wpa_driver_wext_set_operstate()
     * fails. This will hit us when wpa_supplicant does not need to do
     * IEEE 802.1X authentication
     */
    if (drv->operstate == 1 &&
        (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
        !(ifi->ifi_flags & IFF_RUNNING)) {
        wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
    }

    nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));

    attrlen = h->nlmsg_len - nlmsg_len;
    if (attrlen < 0) {
        return;
    }

    attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);

    rta_len = RTA_ALIGN(sizeof(struct rtattr));
    while (RTA_OK(attr, attrlen)) {
        if (attr->rta_type == IFLA_WIRELESS) {
            wpa_driver_wext_event_wireless(
                drv, ctx, ((char *) attr) + rta_len,
                attr->rta_len - rta_len);
        } else if (attr->rta_type == IFLA_IFNAME) {
            wpa_driver_wext_event_link(drv, ctx,
                           ((char *) attr) + rta_len,
                           attr->rta_len - rta_len, 0);
        }
        attr = RTA_NEXT(attr, attrlen);
    }
}


static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
                          void *ctx, struct nlmsghdr *h,
                          size_t len)
{
    struct ifinfomsg *ifi;
    int attrlen, nlmsg_len, rta_len;
    struct rtattr * attr;

    if (len < sizeof(*ifi)) {
        return;
    }

    ifi = NLMSG_DATA(h);

    nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));

    attrlen = h->nlmsg_len - nlmsg_len;
    if (attrlen < 0) {
        return;
    }

    attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);

    rta_len = RTA_ALIGN(sizeof(struct rtattr));
    while (RTA_OK(attr, attrlen)) {
        if (attr->rta_type == IFLA_IFNAME) {
            wpa_driver_wext_event_link(drv,  ctx,
                           ((char *) attr) + rta_len,
                           attr->rta_len - rta_len, 1);
        }
        attr = RTA_NEXT(attr, attrlen);
    }
}


static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
                      void *sock_ctx)
{
    char buf[8192];
    int left;
    struct sockaddr_nl from;
    socklen_t fromlen;
    struct nlmsghdr *h;
    int max_events = 10;

try_again:
    fromlen = sizeof(from);
    left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
            (struct sockaddr *) &from, &fromlen);
    if (left < 0) {
        if (errno != EINTR && errno != EAGAIN) {
            wpa_printf(MSG_ERROR, "%s: recvfrom(netlink): %d", __func__, errno);        }
        return;
    }

    h = (struct nlmsghdr *) buf;
    while (left >= (int) sizeof(*h)) {
        int len, plen;

        len = h->nlmsg_len;
        plen = len - sizeof(*h);
        if (len > left || plen < 0) {
            wpa_printf(MSG_DEBUG, "Malformed netlink message: "
                   "len=%d left=%d plen=%d",
                   len, left, plen);
            break;
        }

        switch (h->nlmsg_type) {
        case RTM_NEWLINK:
            wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
                              h, plen);
            break;
        case RTM_DELLINK:
            wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
                              h, plen);
            break;
        }

        len = NLMSG_ALIGN(len);
        left -= len;
        h = (struct nlmsghdr *) ((char *) h + len);
    }

    if (left > 0) {
        wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
               "message", left);
    }

    if (--max_events > 0) {
        /*
         * Try to receive all events in one eloop call in order to
         * limit race condition on cases where AssocInfo event, Assoc
         * event, and EAPOL frames are received more or less at the
         * same time. We want to process the event messages first
         * before starting EAPOL processing.
         */
        goto try_again;
    }
}


static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
                          const char *ifname, int *flags)
{
    struct ifreq ifr;

    os_memset(&ifr, 0, sizeof(ifr));
    os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
    if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]");
        return -1;
    }
    *flags = ifr.ifr_flags & 0xffff;
    return 0;
}


static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
{
    int flags;

    if (wpa_driver_wext_get_ifflags(drv, &flags) != 0) {
        printf("Could not get interface '%s' flags\n", drv->ifname);
    } else if (!(flags & IFF_UP)) {
        if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
            printf("Could not set interface '%s' UP\n",
                   drv->ifname);
        } else {
            /*
             * Wait some time to allow driver to initialize before
             * starting configuring the driver. This seems to be
             * needed at least some drivers that load firmware etc.
             * when the interface is set up.
             */
            wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
                   "a second for the driver to complete "
                   "initialization", drv->ifname);
            sleep(1);
        }
    }

    /*
     * Make sure that the driver does not have any obsolete PMKID entries.
     */
    wpa_driver_wext_flush_pmkid(drv);

    if (wpa_driver_wext_set_mode(drv, 0) < 0) {
        printf("Could not configure driver to use managed mode\n");
    }

    wpa_driver_wext_get_range(drv);

    /*
     * Unlock the driver's BSSID and force to a random SSID to clear any
     * previous association the driver might have when the supplicant
     * starts up.
     */
    wpa_driver_wext_disconnect(drv);

    drv->ifindex = if_nametoindex(drv->ifname);

    if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
        /*
         * Host AP driver may use both wlan# and wifi# interface in
         * wireless events. Since some of the versions included WE-18
         * support, let's add the alternative ifindex also from
         * driver_wext.c for the time being. This may be removed at
         * some point once it is believed that old versions of the
         * driver are not in use anymore.
         */
        char ifname2[IFNAMSIZ + 1];
        os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
        os_memcpy(ifname2, "wifi", 4);
        wpa_driver_wext_alternative_ifindex(drv, ifname2);
    }

    wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
}


/**
 * wpa_driver_wext_set_scan_timeout - Set scan timeout to report scan completion
 * @priv:  Pointer to private wext data from wpa_driver_wext_init()
 *
 * This function can be used to set registered timeout when starting a scan to
 * generate a scan completed event if the driver does not report this.
 */
static void wpa_driver_wext_set_scan_timeout(void *priv)
{
    struct wpa_driver_wext_data *drv = priv;
    int timeout = 10; /* In case scan A and B bands it can be long */

    /* Not all drivers generate "scan completed" wireless event, so try to
     * read results after a timeout. */
    if (drv->scan_complete_events) {
        /*
         * The driver seems to deliver SIOCGIWSCAN events to notify
         * when scan is complete, so use longer timeout to avoid race
         * conditions with scanning and following association request.
         */
        timeout = 30;
    }
    wpa_printf(MSG_DEBUG, "Scan requested - scan timeout %d seconds",
           timeout);
    eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
    eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
                   drv->ctx);
}


static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
                    size_t *len)
{
    struct iwreq iwr;
    u8 *res_buf;
    size_t res_buf_len;

    res_buf_len = IW_SCAN_MAX_DATA;
    for (;;) {
        res_buf = os_malloc(res_buf_len);
        if (res_buf == NULL) {
            return NULL;
        }
        os_memset(&iwr, 0, sizeof(iwr));
        os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
        iwr.u.data.pointer = res_buf;
        iwr.u.data.length = res_buf_len;

        if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0) {
            break;
        }

        if (errno == E2BIG && res_buf_len < 65535) {
            os_free(res_buf);
            res_buf = NULL;
            res_buf_len *= 2;
            if (res_buf_len > 65535) {
                res_buf_len = 65535; /* 16-bit length field */
            }
            wpa_printf(MSG_DEBUG, "Scan results did not fit - "
                   "trying larger buffer (%lu bytes)",
                   (unsigned long) res_buf_len);
        } else {
            wpa_printf(MSG_ERROR, "ioctl[SIOCGIWSCAN]: %d", errno);
            os_free(res_buf);
            return NULL;
        }
    }

    if (iwr.u.data.length > res_buf_len) {
        os_free(res_buf);
        return NULL;
    }
    *len = iwr.u.data.length;

    return res_buf;
}


/*
 * Data structure for collecting WEXT scan results. This is needed to allow
 * the various methods of reporting IEs to be combined into a single IE buffer.
 */
struct wext_scan_data {
    struct wpa_scan_res res;
    u8 *ie;
    size_t ie_len;
    u8 ssid[32];
    size_t ssid_len;
    int maxrate;
};


static void wext_get_scan_mode(struct iw_event *iwe,
                   struct wext_scan_data *res)
{
    if (iwe->u.mode == IW_MODE_ADHOC) {
        res->res.caps |= IEEE80211_CAP_IBSS;
    } else if (iwe->u.mode == IW_MODE_MASTER ||
             iwe->u.mode == IW_MODE_INFRA) {
        res->res.caps |= IEEE80211_CAP_ESS;
    }
}


static void wext_get_scan_ssid(struct iw_event *iwe,
                   struct wext_scan_data *res, char *custom,
                   char *end)
{
    int ssid_len = iwe->u.essid.length;
    if (custom + ssid_len > end) {
        return;
    }
    if (iwe->u.essid.flags &&
        ssid_len > 0 &&
        ssid_len <= IW_ESSID_MAX_SIZE) {
        os_memcpy(res->ssid, custom, ssid_len);
        res->ssid_len = ssid_len;
    }
}


static void wext_get_scan_freq(struct iw_event *iwe,
                   struct wext_scan_data *res)
{
    int divi = 1000000, i;

    if (iwe->u.freq.e == 0) {
        /*
         * Some drivers do not report frequency, but a channel.
         * Try to map this to frequency by assuming they are using
         * IEEE 802.11b/g.  But don't overwrite a previously parsed
         * frequency if the driver sends both frequency and channel,
         * since the driver may be sending an A-band channel that we
         * don't handle here.
         */

        if (res->res.freq) {
            return;
        }

        if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
            res->res.freq = 2407 + 5 * iwe->u.freq.m;
            return;
        } else if (iwe->u.freq.m == 14) {
            res->res.freq = 2484;
            return;
        }
    }

    if (iwe->u.freq.e > 6) {
        wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
               MACSTR " m=%d e=%d)",
               MAC2STR(res->res.bssid), iwe->u.freq.m,
               iwe->u.freq.e);
        return;
    }

    for (i = 0; i < iwe->u.freq.e; i++)
        divi /= 10;
    res->res.freq = iwe->u.freq.m / divi;
}


static void wext_get_scan_qual(struct iw_event *iwe,
                   struct wext_scan_data *res)
{
    res->res.qual = iwe->u.qual.qual;
    res->res.noise = iwe->u.qual.noise;
    res->res.level = iwe->u.qual.level;
}


static void wext_get_scan_encode(struct iw_event *iwe,
                 struct wext_scan_data *res)
{
    if (!(iwe->u.data.flags & IW_ENCODE_DISABLED)) {
        res->res.caps |= IEEE80211_CAP_PRIVACY;
    }
}


static void wext_get_scan_rate(struct iw_event *iwe,
                   struct wext_scan_data *res, char *pos,
                   char *end)
{
    int maxrate;
    char *custom = pos + IW_EV_LCP_LEN;
    struct iw_param p;
    size_t clen;

    clen = iwe->len;
    if (custom + clen > end) {
        return;
    }
    maxrate = 0;
    while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
        /* Note: may be misaligned, make a local, aligned copy */
        os_memcpy(&p, custom, sizeof(struct iw_param));
        if (p.value > maxrate) {
            maxrate = p.value;
        }
        clen -= sizeof(struct iw_param);
        custom += sizeof(struct iw_param);
    }

    /* Convert the maxrate from WE-style (b/s units) to
     * 802.11 rates (500000 b/s units).
     */
    res->maxrate = maxrate / 500000;
}


static void wext_get_scan_iwevgenie(struct iw_event *iwe,
                    struct wext_scan_data *res, char *custom,
                    char *end)
{
    char *genie, *gpos, *gend;
    u8 *tmp;

    if (iwe->u.data.length == 0) {
        return;
    }

    gpos = genie = custom;
    gend = genie + iwe->u.data.length;
    if (gend > end) {
        wpa_printf(MSG_INFO, "IWEVGENIE overflow");
        return;
    }

    tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
    if (tmp == NULL) {
        return;
    }
    os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
    res->ie = tmp;
    res->ie_len += gend - gpos;
}


static void wext_get_scan_custom(struct iw_event *iwe,
                 struct wext_scan_data *res, char *custom,
                 char *end)
{
    size_t clen;
    u8 *tmp;

    clen = iwe->u.data.length;
    if (custom + clen > end) {
        return;
    }

    if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
        char *spos;
        int bytes;
        spos = custom + 7;
        bytes = custom + clen - spos;
        if (bytes & 1 || bytes == 0) {
            return;
        }
        bytes /= 2;
        tmp = os_realloc(res->ie, res->ie_len + bytes);
        if (tmp == NULL) {
            return;
        }
        hexstr2bin(spos, tmp + res->ie_len, bytes);
        res->ie = tmp;
        res->ie_len += bytes;
    } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
        char *spos;
        int bytes;
        spos = custom + 7;
        bytes = custom + clen - spos;
        if (bytes & 1 || bytes == 0) {
            return;
        }
        bytes /= 2;
        tmp = os_realloc(res->ie, res->ie_len + bytes);
        if (tmp == NULL) {
            return;
        }
        hexstr2bin(spos, tmp + res->ie_len, bytes);
        res->ie = tmp;
        res->ie_len += bytes;
    } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
        char *spos;
        int bytes;
        u8 bin[8];
        spos = custom + 4;
        bytes = custom + clen - spos;
        if (bytes != 16) {
            wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
            return;
        }
        bytes /= 2;
        hexstr2bin(spos, bin, bytes);
        res->res.tsf += WPA_GET_BE64(bin);
    }
}


static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
{
    return drv->we_version_compiled > 18 &&
        (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
         cmd == IWEVGENIE || cmd == IWEVCUSTOM);
}


static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
                       struct wext_scan_data *data)
{
    struct wpa_scan_res **tmp;
    struct wpa_scan_res *r;
    size_t extra_len;
    u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;

    /* Figure out whether we need to fake any IEs */
    pos = data->ie;
    end = pos + data->ie_len;
    while (pos && pos + 1 < end) {
        if (pos + 2 + pos[1] > end) {
            break;
        }
        if (pos[0] == WLAN_EID_SSID) {
            ssid_ie = pos;
        } else if (pos[0] == WLAN_EID_SUPP_RATES) {
            rate_ie = pos;
        } else if (pos[0] == WLAN_EID_EXT_SUPP_RATES) {
            rate_ie = pos;
        }
        pos += 2 + pos[1];
    }

    extra_len = 0;
    if (ssid_ie == NULL) {
        extra_len += 2 + data->ssid_len;
    }
    if (rate_ie == NULL && data->maxrate) {
        extra_len += 3;
    }

    r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
    if (r == NULL) {
        return;
    }
    os_memcpy(r, &data->res, sizeof(*r));
    r->ie_len = extra_len + data->ie_len;
    pos = (u8 *) (r + 1);
    if (ssid_ie == NULL) {
        /*
         * Generate a fake SSID IE since the driver did not report
         * a full IE list.
         */
        *pos++ = WLAN_EID_SSID;
        *pos++ = data->ssid_len;
        os_memcpy(pos, data->ssid, data->ssid_len);
        pos += data->ssid_len;
    }
    if (rate_ie == NULL && data->maxrate) {
        /*
         * Generate a fake Supported Rates IE since the driver did not
         * report a full IE list.
         */
        *pos++ = WLAN_EID_SUPP_RATES;
        *pos++ = 1;
        *pos++ = data->maxrate;
    }
    if (data->ie) {
        os_memcpy(pos, data->ie, data->ie_len);
    }

    tmp = os_realloc(res->res,
             (res->num + 1) * sizeof(struct wpa_scan_res *));
    if (tmp == NULL) {
        os_free(r);
        return;
    }
    tmp[res->num++] = r;
    res->res = tmp;
}



static int wpa_driver_wext_get_range(void *priv)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iw_range *range;
    struct iwreq iwr;
    int minlen;
    size_t buflen;

    /*
     * Use larger buffer than struct iw_range in order to allow the
     * structure to grow in the future.
     */
    buflen = sizeof(struct iw_range) + 500;
    range = os_zalloc(buflen);
    if (range == NULL) {
        return -1;
    }

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    iwr.u.data.pointer = (caddr_t) range;
    iwr.u.data.length = buflen;

    minlen = ((char *) &range->enc_capa) - (char *) range +
        sizeof(range->enc_capa);

    if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCGIRANGE]");
        os_free(range);
        return -1;
    } else if (iwr.u.data.length >= minlen &&
           range->we_version_compiled >= 18) {
        wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
               "WE(source)=%d enc_capa=0x%x",
               range->we_version_compiled,
               range->we_version_source,
               range->enc_capa);
        drv->has_capability = 1;
        drv->we_version_compiled = range->we_version_compiled;
        if (range->enc_capa & IW_ENC_CAPA_WPA) {
            drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
                WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
        }
        if (range->enc_capa & IW_ENC_CAPA_WPA2) {
            drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
                WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
        }
        drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
            WPA_DRIVER_CAPA_ENC_WEP104;
        if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP) {
            drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
        }
        if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP) {
            drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
        }
        if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE) {
            drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
        }
        drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
            WPA_DRIVER_AUTH_SHARED |
            WPA_DRIVER_AUTH_LEAP;

        wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
               "flags 0x%x",
               drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
    } else {
        wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
               "assuming WPA is not supported");
    }

    os_free(range);
    return 0;
}


static int wpa_driver_wext_set_wpa(void *priv, int enabled)
{
    struct wpa_driver_wext_data *drv = priv;
    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);

    return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
                          enabled);
}


static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
                   const u8 *psk)
{
    struct iw_encode_ext *ext;
    struct iwreq iwr;
    int ret;

    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);

    if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) {
        return 0;
    }

    if (!psk) {
        return 0;
    }

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);

    ext = os_zalloc(sizeof(*ext) + PMK_LEN);
    if (ext == NULL) {
        return -1;
    }

    iwr.u.encoding.pointer = (caddr_t) ext;
    iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
    ext->key_len = PMK_LEN;
    os_memcpy(&ext->key, psk, ext->key_len);
    ext->alg = IW_ENCODE_ALG_PMK;

    ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
    if (ret < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODEEXT] PMK");
    }
    os_free(ext);

    return ret;
}


static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
                       const u8 *addr, int key_idx,
                       int set_tx, const u8 *seq,
                       size_t seq_len,
                       const u8 *key, size_t key_len)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iwreq iwr;
    int ret = 0;
    struct iw_encode_ext *ext;

    if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
        wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
               __FUNCTION__, (unsigned long) seq_len);
        return -1;
    }

    ext = os_zalloc(sizeof(*ext) + key_len);
    if (ext == NULL) {
        return -1;
    }
    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    iwr.u.encoding.flags = key_idx + 1;
    iwr.u.encoding.flags |= IW_ENCODE_TEMP;
    if (alg == WPA_ALG_NONE) {
        iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
    }
    iwr.u.encoding.pointer = (caddr_t) ext;
    iwr.u.encoding.length = sizeof(*ext) + key_len;

    if (addr == NULL ||
        os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0) {
        ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
    }
    if (set_tx) {
        ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
    }

    ext->addr.sa_family = ARPHRD_ETHER;
    if (addr) {
        os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
    } else {
        os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
    }
    if (key && key_len) {
        os_memcpy(ext + 1, key, key_len);
        ext->key_len = key_len;
    }
    switch (alg) {
    case WPA_ALG_NONE:
        ext->alg = IW_ENCODE_ALG_NONE;
        break;
    case WPA_ALG_WEP:
        ext->alg = IW_ENCODE_ALG_WEP;
        break;
    case WPA_ALG_TKIP:
        ext->alg = IW_ENCODE_ALG_TKIP;
        break;
    case WPA_ALG_CCMP:
        ext->alg = IW_ENCODE_ALG_CCMP;
        break;
    case WPA_ALG_PMK:
        ext->alg = IW_ENCODE_ALG_PMK;
        break;
#ifdef CONFIG_IEEE80211W
    case WPA_ALG_IGTK:
        ext->alg = IW_ENCODE_ALG_AES_CMAC;
        break;
#endif /* CONFIG_IEEE80211W */
    default:
        wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
               __FUNCTION__, alg);
        os_free(ext);
        return -1;
    }

    if (seq && seq_len) {
        ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
        os_memcpy(ext->rx_seq, seq, seq_len);
    }

    if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
        ret = errno == EOPNOTSUPP ? -2 : -1;
        if (errno == ENODEV) {
            /*
             * ndiswrapper seems to be returning incorrect error
             * code.. */
            ret = -2;
        }

        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODEEXT]");
    }

    os_free(ext);
    return ret;
}


static int wpa_driver_wext_set_countermeasures(void *priv,
                           int enabled)
{
    struct wpa_driver_wext_data *drv = priv;
    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
    return wpa_driver_wext_set_auth_param(drv,
                          IW_AUTH_TKIP_COUNTERMEASURES,
                          enabled);
}


static int wpa_driver_wext_set_drop_unencrypted(void *priv,
                        int enabled)
{
    struct wpa_driver_wext_data *drv = priv;
    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
    drv->use_crypt = enabled;
    return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
                          enabled);
}


static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
                const u8 *addr, int cmd, int reason_code)
{
    struct iwreq iwr;
    struct iw_mlme mlme;
    int ret = 0;

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    os_memset(&mlme, 0, sizeof(mlme));
    mlme.cmd = cmd;
    mlme.reason_code = reason_code;
    mlme.addr.sa_family = ARPHRD_ETHER;
    os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
    iwr.u.data.pointer = (caddr_t) &mlme;
    iwr.u.data.length = sizeof(mlme);

    if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWMLME]");
        ret = -1;
    }

    return ret;
}


static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
{
    struct iwreq iwr;
    const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
#ifndef ANDROID
    u8 ssid[32];
    int i;
#endif

    /*
     * Only force-disconnect when the card is in infrastructure mode,
     * otherwise the driver might interpret the cleared BSSID and random
     * SSID as an attempt to create a new ad-hoc network.
     */
    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCGIWMODE]");
        iwr.u.mode = IW_MODE_INFRA;
    }

    if (iwr.u.mode == IW_MODE_INFRA) {
        /*
         * Clear the BSSID selection and set a random SSID to make sure
         * the driver will not be trying to associate with something
         * even if it does not understand SIOCSIWMLME commands (or
         * tries to associate automatically after deauth/disassoc).
         */
        wpa_driver_wext_set_bssid(drv, null_bssid);
#ifndef ANDROID
        for (i = 0; i < 32; i++)
            ssid[i] = rand() & 0xFF;
        wpa_driver_wext_set_ssid(drv, ssid, 32);
#endif
    }
}


static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
                      int reason_code)
{
    struct wpa_driver_wext_data *drv = priv;
    int ret;
    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
    ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
    wpa_driver_wext_disconnect(drv);
    return ret;
}


static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
                    int reason_code)
{
    struct wpa_driver_wext_data *drv = priv;
    int ret;
    wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
    ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
    wpa_driver_wext_disconnect(drv);
    return ret;
}


static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
                      size_t ie_len)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iwreq iwr;
    int ret = 0;

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    iwr.u.data.pointer = (caddr_t) ie;
    iwr.u.data.length = ie_len;

    if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWGENIE]");
        ret = -1;
    }

    return ret;
}


static int
wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
                  struct wpa_driver_associate_params *params)
{
    struct iwreq iwr;
    int ret = 0;

    wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
           "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    /* Just changing mode, not actual keys */
    iwr.u.encoding.flags = 0;
    iwr.u.encoding.pointer = (caddr_t) NULL;
    iwr.u.encoding.length = 0;

    /*
     * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
     * different things. Here they are used to indicate Open System vs.
     * Shared Key authentication algorithm. However, some drivers may use
     * them to select between open/restricted WEP encrypted (open = allow
     * both unencrypted and encrypted frames; restricted = only allow
     * encrypted frames).
     */

    if (!drv->use_crypt) {
        iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
    } else {
        if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM) {
            iwr.u.encoding.flags |= IW_ENCODE_OPEN;
        }
        if (params->auth_alg & AUTH_ALG_SHARED_KEY) {
            iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
        }
    }

    if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODE]");
        ret = -1;
    }

    return ret;
}

static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
{
    struct wpa_driver_wext_data *drv = priv;
    int algs = 0, res;

    if (auth_alg & AUTH_ALG_OPEN_SYSTEM) {
        algs |= IW_AUTH_ALG_OPEN_SYSTEM;
    }
    if (auth_alg & AUTH_ALG_SHARED_KEY) {
        algs |= IW_AUTH_ALG_SHARED_KEY;
    }
    if (auth_alg & AUTH_ALG_LEAP) {
        algs |= IW_AUTH_ALG_LEAP;
    }
    if (algs == 0) {
        /* at least one algorithm should be set */
        algs = IW_AUTH_ALG_OPEN_SYSTEM;
    }

    res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
                         algs);
    drv->auth_alg_fallback = res == -2;
    return res;
}

static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
                 u32 cmd, const u8 *bssid, const u8 *pmkid)
{
    struct iwreq iwr;
    struct iw_pmksa pmksa;
    int ret = 0;

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
    os_memset(&pmksa, 0, sizeof(pmksa));
    pmksa.cmd = cmd;
    pmksa.bssid.sa_family = ARPHRD_ETHER;
    if (bssid) {
        os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
    }
    if (pmkid) {
        os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
    }
    iwr.u.data.pointer = (caddr_t) &pmksa;
    iwr.u.data.length = sizeof(pmksa);

    if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
        if (errno != EOPNOTSUPP) {
            wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPMKSA]");
        }
        ret = -1;
    }

    return ret;
}


static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
                     const u8 *pmkid)
{
    struct wpa_driver_wext_data *drv = priv;
    return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
}


static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
                    const u8 *pmkid)
{
    struct wpa_driver_wext_data *drv = priv;
    return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
}


static int wpa_driver_wext_flush_pmkid(void *priv)
{
    struct wpa_driver_wext_data *drv = priv;
    return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
}


#ifdef ANDROID

static int wpa_driver_wext_get_mac_addr(void *priv, u8 *addr)
{
    struct wpa_driver_wext_data *drv = priv;
    struct ifreq ifr;
    static const u8 nullmac[ETH_ALEN] = {0};

    os_memset(&ifr, 0, sizeof(ifr));
    os_strncpy(ifr.ifr_name, drv->ifname, IFNAMSIZ);

    if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) < 0) {
        perror("ioctl[SIOCGIFHWADDR]");
        return -1;
    }
    os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
    if (os_memcmp(addr, nullmac, ETH_ALEN) == 0) {
        return -1;
    }

    return 0;
}

static int wpa_driver_wext_get_rssi(void *priv)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iwreq iwr;
    struct iw_statistics iws;
    int sig = 0;

    os_memset(&iwr, 0, sizeof(iwr));
    iwr.u.data.pointer = (char*)&iws;
    iwr.u.data.length  = sizeof(iws);
    iwr.u.data.flags = 1;
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);

    if (ioctl(drv->ioctl_sock, SIOCGIWSTATS, &iwr) < 0) {
        perror("ioctl[SIOCGIWSTATS]");
        return -1;
    }

    sig = iws.qual.level;
    if (sig == 0) {
        return -1;
    }
    if (iws.qual.updated & IW_QUAL_DBM) {
        sig -= 0x100;
    }

    return sig;
}

static int wpa_driver_wext_get_linkspeed(void *priv)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iwreq iwr;
    int linkspeed;

    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);

    if (ioctl(drv->ioctl_sock, SIOCGIWRATE, &iwr) < 0) {
        perror("ioctl[SIOCGIWRATE]");
        return -1;
    }

    linkspeed = iwr.u.bitrate.value / 1000000;

    return linkspeed;
}

static char *wpa_driver_get_country_code(int channels)
{
    static char *country = "US"; /* WEXT_NUMBER_SCAN_CHANNELS_FCC */

    if (channels == WEXT_NUMBER_SCAN_CHANNELS_ETSI) {
        country = "EU";
    } else if( channels == WEXT_NUMBER_SCAN_CHANNELS_MKK1) {
        country = "JP";
    }
    return country;
}

/* global NL structures */
struct nl_handle *nl_sock;
struct nl_cache *nl_cache;
struct genl_family *nl80211;

static int wpa_driver_init_nl() {
    int err;

    nl_sock = nl_socket_alloc();
    if (!nl_sock) {
        wpa_printf(MSG_DEBUG,"Failed to allocate netlink socket.");
        return -ENOMEM;
    }

    if (genl_connect(nl_sock)) {
        wpa_printf(MSG_DEBUG,"Failed to connect to generic netlink.");
        err = -ENOLINK;
        goto out_handle_destroy;
    }

    genl_ctrl_alloc_cache(nl_sock, &nl_cache);
    if (!nl_cache) {
        wpa_printf(MSG_DEBUG,"Failed to allocate generic netlink cache.");
        err = -ENOMEM;
        goto out_handle_destroy;
    }

    nl80211 = genl_ctrl_search_by_name(nl_cache, "nl80211");
    if (!nl80211) {
        wpa_printf(MSG_DEBUG,"nl80211 not found.");
        err = -ENOENT;
        goto out_cache_free;
    }

    return 0;

out_cache_free:
    nl_cache_free(nl_cache);
out_handle_destroy:
    nl_socket_free(nl_sock);
    return err;
}

static void wpa_driver_deinit_nl() {
    genl_family_put(nl80211);
    nl_cache_free(nl_cache);
    nl_socket_free(nl_sock);
}

static int nl_error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
{
    int *ret = (int *)arg;
    *ret = err->error;
    return NL_STOP;
}

static int nl_finish_handler(struct nl_msg *msg, void *arg)
{
     int *ret = (int *)arg;
     *ret = 0;
     return NL_SKIP;
}

static int nl_ack_handler(struct nl_msg *msg, void *arg)
{
    int *ret = (int *)arg;
    *ret = 0;
    return NL_STOP;
}

static int wpa_driver_set_power_save(char *iface, int state)
{
    int ret;
    struct nl_cb *cb;
    struct nl_msg *msg;
    int devidx = 0;
    int err;
    enum nl80211_ps_state ps_state;

    ret = wpa_driver_init_nl();
    if (ret != 0) {
        return ret;
    }

    ret = -1;

        devidx = if_nametoindex(iface);
        if (devidx == 0) {
            wpa_printf(MSG_DEBUG,"failed to translate ifname to idx");
            goto exit;
        }

    msg = nlmsg_alloc();
    if (!msg) {
        wpa_printf(MSG_DEBUG,"failed to allocate netlink message");
        goto exit;
    }

    cb = nl_cb_alloc(NL_CB_DEFAULT);
    if (!cb) {
        wpa_printf(MSG_DEBUG,"failed to allocate netlink callbacks");
        goto out_free_msg;
    }

    genlmsg_put(msg, 0, 0, genl_family_get_id(nl80211), 0, 0,
            NL80211_CMD_SET_POWER_SAVE, 0);

    if (state != 0) {
        ps_state = NL80211_PS_ENABLED;
    } else {
        ps_state = NL80211_PS_DISABLED;
    }

    NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, devidx);
    NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);

    err = nl_send_auto_complete(nl_sock, msg);
    if (err < 0) {
        wpa_printf(MSG_DEBUG, "could not send auto_complete: %d", err);
        goto out;
    }

    err = 1;

    nl_cb_err(cb, NL_CB_CUSTOM, nl_error_handler, &err);
    nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nl_finish_handler, &err);
    nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, nl_ack_handler, &err);

    while (err > 0)
        nl_recvmsgs(nl_sock, cb);

    ret = 0;
out:
    nl_cb_put(cb);
out_free_msg:
    nlmsg_free(msg);
nla_put_failure:

exit:
    wpa_driver_deinit_nl();
    return ret;
}

static int wpa_driver_set_country(char *iface, char *country)
{
    int ret;
    struct nl_cb *cb;
    struct nl_msg *msg;
    int devidx = 0;
    int err;
    char alpha2[3];
    ret = wpa_driver_init_nl();
    if (ret != 0) {
        return ret;
    }

    ret = -1;

    devidx = if_nametoindex(iface);
    if (devidx == 0) {
        wpa_printf(MSG_DEBUG,"failed to translate ifname to idx");
        goto exit;
    }

    msg = nlmsg_alloc();
    if (!msg) {
        wpa_printf(MSG_DEBUG,"failed to allocate netlink message");
        goto exit;
    }

    cb = nl_cb_alloc(NL_CB_DEFAULT);
    if (!cb) {
        wpa_printf(MSG_DEBUG,"failed to allocate netlink callbacks");
        goto out_free_msg;
    }

    alpha2[0] = country[0];
    alpha2[1] = country[1];
    alpha2[2] = '\0';

    genlmsg_put(msg, 0, 0, genl_family_get_id(nl80211), 0, 0,
            NL80211_CMD_REQ_SET_REG, 0);

    NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, devidx);
    NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);

    err = nl_send_auto_complete(nl_sock, msg);
    if (err < 0) {
        wpa_printf(MSG_DEBUG, "could not send auto_complete: %d", err);
        goto out;
    }

    err = 1;

    nl_cb_err(cb, NL_CB_CUSTOM, nl_error_handler, &err);
    nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nl_finish_handler, &err);
    nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, nl_ack_handler, &err);

    while (err > 0)
        nl_recvmsgs(nl_sock, cb);

    ret = 0;
out:
    nl_cb_put(cb);
out_free_msg:
    nlmsg_free(msg);
nla_put_failure:

exit:
    wpa_driver_deinit_nl();
    return ret;
}

static int wpa_driver_toggle_btcoex_state(char state)
{
    int ret;
    int fd = open("/sys/devices/platform/wl1271/bt_coex_state", O_RDWR, 0);
    if (fd == -1) {
        return -1;
    }

    ret = write(fd, &state, sizeof(state));
    close(fd);

    wpa_printf(MSG_DEBUG, "%s:  set btcoex state to '%c' result = %d", __func__,
           state, ret);
    return ret;
}

static int wpa_driver_toggle_rx_filter(char state)
{
    return 0; /* not implemented yet */
}

/* we start with "auto" power mode - power_save is on */
int g_power_mode = 0;

/* currently cached scan type */
u8 g_scan_type = IW_SCAN_TYPE_ACTIVE;

/* start with "world" num of channels */
int g_num_channels = 13;

static int wpa_driver_priv_driver_cmd( void *priv, char *cmd, char *buf, size_t buf_len )
{
    struct wpa_driver_wext_data *drv = priv;
    struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx);
    int ret = 0, flags;

    wpa_printf(MSG_DEBUG, "%s %s len = %d", __func__, cmd, buf_len);

    if (os_strcasecmp(cmd, "STOP") == 0) {
        if ((wpa_driver_wext_get_ifflags(drv, &flags) == 0) &&
            (flags & IFF_UP)) {
            wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
        }
        wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
    } else if (os_strcasecmp(cmd, "START") == 0) {
        if ((wpa_driver_wext_get_ifflags(drv, &flags) == 0) &&
            !(flags & IFF_UP)) {
            wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
        }
        wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
    } else if (os_strcasecmp(cmd, "MACADDR") == 0) {
        u8 macaddr[ETH_ALEN] = {};

        ret = wpa_driver_wext_get_mac_addr(priv, macaddr);
        if (ret < 0) {
            goto out;
        }

        ret = os_snprintf(buf, buf_len, "Macaddr = " MACSTR "\n", MAC2STR(macaddr));
    } else if ((os_strcasecmp(cmd, "RSSI") == 0) || (os_strcasecmp(cmd, "RSSI-APPROX") == 0)) {
        u8 ssid[MAX_SSID_LEN];
        int rssi;

        rssi = wpa_driver_wext_get_rssi(priv);
        if ((rssi != -1) && (wpa_driver_wext_get_ssid(priv, ssid) > 0)) {
            ret = os_snprintf(buf, buf_len, "%s rssi %d\n", ssid, rssi);
        } else {
            ret = -1;
        }
    } else if (os_strcasecmp(cmd, "LINKSPEED") == 0) {
        int linkspeed;

        linkspeed = wpa_driver_wext_get_linkspeed(priv);
        if (linkspeed != -1) {
            ret = os_snprintf(buf, buf_len, "LinkSpeed %d\n", linkspeed);
        } else {
            ret = -1;
        }
    } else if( os_strcasecmp(cmd, "RELOAD") == 0 ) {
        wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
    } else if( os_strcasecmp(cmd, "SCAN-PASSIVE") == 0 ) {
        g_scan_type = IW_SCAN_TYPE_PASSIVE;
        ret = 0;
    } else if( os_strcasecmp(cmd, "SCAN-ACTIVE") == 0 ) {
        g_scan_type = IW_SCAN_TYPE_ACTIVE;
        ret = 0;
    } else if( os_strcasecmp(cmd, "SCAN-MODE") == 0 ) {
        ret = snprintf(buf, buf_len, "ScanMode = %u\n", g_scan_type);
        if (ret < (int)buf_len) {
            return ret;
        }
    } else if( os_strncasecmp(cmd, "POWERMODE", 9) == 0 ) {
        int mode = atoi(cmd + 9);

        if (mode == g_power_mode) {
            ret = 0;
        } else if (mode == 1) { /* active mode */
            ret = wpa_driver_set_power_save(drv->ifname, 0);
        } else if (mode == 0) { /* auto mode */
            ret = wpa_driver_set_power_save(drv->ifname, 1);
        }

        if (!ret) {
            g_power_mode = mode;
        }

        wpa_printf(MSG_DEBUG, "global POWERMODE set to %d (wanted %d), ret %d",
               g_power_mode, mode, ret);
    } else if( os_strcasecmp(cmd, "GETPOWER") == 0 ) {
        ret = sprintf(buf, "powermode = %u\n", g_power_mode);
    } else if( os_strncasecmp(cmd, "BTCOEXMODE", 10) == 0 ) {
        int mode = atoi(cmd + 10);

        wpa_printf(MSG_DEBUG, "will change btcoex mode to: %d", mode);

        if (mode == 1) { /* disable BT-coex */
            ret = wpa_driver_toggle_btcoex_state('0');
        } else if (mode == 2) { /* enable BT-coex */
            ret = wpa_driver_toggle_btcoex_state('1');
        } else {
            wpa_printf(MSG_DEBUG, "invalid btcoex mode: %d", mode);
            ret = -1;
        }
    } else if( os_strcasecmp(cmd, "RXFILTER-START") == 0 ) {
        ret = wpa_driver_toggle_rx_filter('1');
    } else if( os_strcasecmp(cmd, "RXFILTER-STOP") == 0 ) {
        ret = wpa_driver_toggle_rx_filter('0');
    } else if( os_strncasecmp(cmd, "country", 7) == 0 ) {
        wpa_printf(MSG_DEBUG, "setting country code to: %s", cmd + 8);
        ret = wpa_driver_set_country(drv->ifname, cmd + 8);
    } else {
        wpa_printf(MSG_ERROR, "Unsupported command: %s", cmd);
        ret = -1;
    }

out:
    return ret;
}

#endif

/**
 * wpa_driver_wext_scan_custom - Request the driver to initiate scan
 * @priv: Pointer to private wext data from wpa_driver_wext_init()
 * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
 *    all SSIDs (either active scan with broadcast SSID or passive
 *    scan
 * @ssid_len: Length of the SSID
 * Returns: 0 on success, -1 on failure
 */
int wpa_driver_wext_scan_custom(void *priv, const u8 *ssid, size_t ssid_len)
{
    struct wpa_driver_wext_data *drv = priv;
    struct iwreq iwr;
    int ret = 0;
    struct iw_scan_req req;
#ifdef ANDROID
    struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx);
    int scan_probe_flag = 0;
#endif

    if (ssid_len > IW_ESSID_MAX_SIZE) {
        wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
               __FUNCTION__, (unsigned long) ssid_len);
        return -1;
    }

    os_memset(&iwr, 0, sizeof(iwr));
    os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);

    os_memset(&req, 0, sizeof(req));
    req.scan_type = g_scan_type; /* Scan type is cached */
    req.bssid.sa_family = ARPHRD_ETHER;
    os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
    iwr.u.data.pointer = (caddr_t) &req;
    iwr.u.data.length = sizeof(req);
    iwr.u.data.flags = IW_SCAN_THIS_ESSID;

    wpa_printf(MSG_DEBUG, "%s: scanning with scan type: %s", __func__,
           g_scan_type == IW_SCAN_TYPE_PASSIVE ? "PASSIVE" : "ACTIVE");

#ifdef ANDROID
    if (wpa_s->prev_scan_ssid != BROADCAST_SSID_SCAN) {
        scan_probe_flag = wpa_s->prev_scan_ssid->scan_ssid;
    }
    wpa_printf(MSG_DEBUG, "%s: specific scan = %d", __func__,
        (scan_probe_flag && (ssid && ssid_len)) ? 1 : 0);
    if (scan_probe_flag && (ssid && ssid_len)) {
#else
    if (ssid && ssid_len) {
#endif
        req.essid_len = ssid_len;
        os_memcpy(req.essid, ssid, ssid_len);
    }

    if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
        wpa_printf(MSG_ERROR, "ioctl[SIOCSIWSCAN]");
        ret = -1;
    }

    wpa_driver_wext_set_scan_timeout(priv);

    return ret;
}

const struct wpa_driver_ops wpa_driver_custom_ops = {
    .name = "mac80211_wext",
    .desc = "mac80211 station driver for TI wl12xx",
    .get_bssid = wpa_driver_wext_get_bssid,
    .get_ssid = wpa_driver_wext_get_ssid,
    .set_wpa = wpa_driver_wext_set_wpa,
    .set_key = wpa_driver_wext_set_key,
    .set_countermeasures = wpa_driver_wext_set_countermeasures,
    .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
    .scan = wpa_driver_wext_scan_custom,
    .get_scan_results2 = wpa_driver_wext_get_scan_results,
    .deauthenticate = wpa_driver_wext_deauthenticate,
    .disassociate = wpa_driver_wext_disassociate,
    .set_mode = wpa_driver_wext_set_mode,
    .associate = wpa_driver_wext_associate,
    .set_auth_alg = wpa_driver_wext_set_auth_alg,
    .init = wpa_driver_wext_init,
    .deinit = wpa_driver_wext_deinit,
    .add_pmkid = wpa_driver_wext_add_pmkid,
    .remove_pmkid = wpa_driver_wext_remove_pmkid,
    .flush_pmkid = wpa_driver_wext_flush_pmkid,
    .get_capa = wpa_driver_wext_get_capa,
    .set_operstate = wpa_driver_wext_set_operstate,
#ifdef ANDROID
    .driver_cmd = wpa_driver_priv_driver_cmd,
#endif
};
